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REP(MUS) 21 exercise gives Allies a chance to field and evaluate new maritime technologies.

| 2021

Exercise REP (MUS) 21 took place from 13 to 24 September, with a special focus on Tróia and involved more than 40 entities, including 17 Navy, 15 Research & Development Entities, 1 University and 8 organizations of NATO.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 The REP (MUS) exercise is an experimentation exercise for Unmanned Maritime Systems (Picture source: RS)

REP (MUS) 21 stands for Robotic Experimentation and Prototyping Augmented by Maritime Unmanned Systems. The REP (MUS) exercise is an experimentation exercise for Unmanned Maritime Systems. It started in 2010, with a protocol between the Portuguese Navy and the Faculty of Engineering of the University of Porto (FEUP), which over the years has grown and aroused national and international interest from other entities.

Various unmanned systems were put to the test during REP(MUS) 21, an annual exercise jointly organised by the Portuguese Navy, the University of Porto, NATO’s Centre for Maritime Research and Experimentation (CMRE) and the NATO Maritime Unmanned Systems Initiative. The exercise gives Allies a chance to field and evaluate new maritime technologies.

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Mine Counter Measure exercise (Picture source: Laboratório de Sistemas e Tecnologia Subaquática)

MCM: Mine Counter Measure is an exercise coordinated by Nato Naval Mine Warfare Centre of Excellence (NMW) aiming for more effective missions and interoperability by providing comprehensive expertise on Naval Mine Warfare. This edition of the REP(MUS) exercise, has about twelve participants among NATO, its allies, partner nations, academia and industry.

Besides the typical missions for mine detection and C3 networks, this year LSTS was part of the Collaborative Interoperable Autonomy Experiments. These experiments' goal was to achieve interoperability under the new standard SCI 343 framework and conduct collaboration between multiple autonomous systems. This initiative involved joint work between LSTS, TNO and NSWC-PCD.

In the future of MCM, the goal is to have common processes and procedures regarding mine detection to have more effective results to reduce the risk of missions.

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 DISSUB (stands for Distressed Submarine) exercise (Picture source: Laboratório de Sistemas e Tecnologia Subaquática)

The DISSUB (stands for Distressed Submarine) exercise is focused on the usage of underwater digital communications (STANG4748 also known as JANUS) for support in submarine SMER (Submarine Escape and Rescue) operations. This exercise in REP dates back to REP17 edition, and has been developed and experimented over the last editions under the scope of the EUMarineRobots project as a joint research activity (JRA) between the NATO CMRE and UPORTO FEUP LSTS, in close cooperation with the PT Navy. The main goal for LSTS is to further integrate the use of the AUVs during the searching phase of a distressed submarine.

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001

 DISSUB scenario (Picture source: NATO CMRE)

The exercise outline goes as follows:

  • After a hypothetical emergency is declared, a JANUS enabled underwater telephone onboard the NRP Submarine starts sending periodically JANUS messages with estimated position and relevant vital data of persons and environment.
  • - The JANUS packets will be picked up by the Wave Glider and forwarded to the AUVs operating in the area.
  • - The AUVs are used to triangulate and confirm the position of the distressed submarine to reduce the error on the sent location.
  • - The AUVs receiving the distress data will trigger a searching behavior navigating towards and around the submarine.

On the 15th and 18th of September the DISSUB exercise was executed and we were able to successfully receive a distress signal from the NRP Submarine and execute search patterns automatically generated onboard the AUV. The AUV surveys confirmed the NRP Submarine location and acquired sidescan images on the location.

This year’s edition was more challenging due to COVID-19 restrictions, but nonetheless we were able to improve the quality and efficiency of the automatically generated search patterns. In the next edition we hope to improve the communication procedure between the AUVs and the Wave Glider, in order to trigger the search pattern survey more efficiently.

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 A UK Royal Navy sailor and UK Royal Marine prepare to launch an ‘Otter,’ an unmanned maritime drone built by Norway-based Maritime Robotics AS, into the sea off the Troia Peninsula in Portugal during exercise “Robotic Experimentation and Prototyping Augmented by Maritime Unmanned Systems” REP(MUS) 21.(Picture source: NATO)

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 A group of Acecore ‘Neo’ quadcopters take flight on the Troia Peninsula in Portugal during exercise “Robotic Experimentation and Prototyping Augmented by Maritime Unmanned Systems” REP(MUS) 21. (Picture source: NATO)

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Sailors on the German Navy research vessel Planet recover an autonomous underwater vehicle off Sesimbra in Portugal during exercise “Robotic Experimentation and Prototyping Augmented by Maritime Unmanned Systems” REP(MUS) 21 (Picture source: NATO)

Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 A Spanish Navy SEAD 23 unmanned boat sits anchored off the Troia Peninsula in Portugal during exercise “Robotic Experimentation and Prototyping Augmented by Maritime Unmanned Systems” REP(MUS) 21 (Picture source: NATO)

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